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Acquisitions (Acquisition Of Nstein Technologies Inc.) (Details) (Nstein Technologies Inc. [Member])
 0 Months Ended 12 Months Ended
Mar. 31, 2010
USD ($)
Jun. 30, 2010
USD ($)
Jun. 30, 2009
USD ($)
Mar. 31, 2010
CAD
Mar. 31, 2010
Customer Assets [Member]
USD ($)
Mar. 31, 2010
Technology Assets [Member]
USD ($)
Business Acquisition, Cost of Acquired Entity [Abstract]            
Equity consideration paid $ 8,548,000          
Cash consideration paid 25,326,000          
Fair value of total consideration transferred 33,874,000          
Acquisition related costs   958,000        
Business Acquisition, Purchase Price Allocation [Abstract]            
Current assets 13,602,000          
Cash acquired from acquisition 4,956,000          
Long-term assets 10,545,000          
Intangible assets         2,919,000 17,310,000
Total liabilities assumed (13,784,000)          
Total identifiable net assets 30,592,000          
Goodwill 3,282,000          
Common shares issued as part of the consideration (in CAD per share)       48.39    
Volume-weighted average stock price measurement period 10 days          
Fair value of accounts receivable acquired 5,100,000          
Acquired accounts receivable, gross 6,000,000          
Acquired accounts receivable, expected to be uncollectible 900,000          
Business Acquisition, Pro Forma Information [Abstract]            
Total revenues   925,072,000 807,636,000      
Net income   $ 83,122,000 $ 54,066,000